Then start GenyMotion and add an emulator with the preset !! PREVIEW - Google Nexus 5X - 6.0.0 - API 23 - 1080x1920. Start it and wait until you see the homescreen.

The next step is to flash the Genymotion-ARM-Translation_v1.1.zip. To do that, just drap & drop the .zip file onto the emulator.

Turn the emulator off with the power button and wait until it is powered off. Then turn it on again.

Now repeat the last two steps with gapps-L-4-21-15.zip (flash, reboot).

If you are finished with that, sign into your Google account (you can do that when opening the Play Store). If you are successfully logged in, flash the benzo-gapps-M-20151011-signed-chroma-r3.zip file and reboot again.